why wasim and waqar were accused of ball tempering?

Well its interesting to see how England bowlers are reverse swinging the old ball in current ashes series and they are getting all the media attention etc, i remember on Pakistan's tour of england 1992, when great Waqar younis and Wasim Akram bowled superbly in that series, they were acused of ball tempering, cheating and all sorts in the media? i wonder what England bowlers are doing now? is that cheating too?

There are two sides of the coin as to why the Pakistanis were accused of ball tampering.

1. Reverse swing was new and it bewildered the English leading to accusations.

2. They really did tamper with the ball. Sidhu has said on tv that it is not unknown among cricketers that tampering is some thing which took place by lot of if not all teams. Pakistanis mastered it and Indians would struggle after the drinks breaks in Sharjah.